651 citations · 4.6k across the 31 of their papers we have counts for
31 papers
Spin-Triplet Topological Excitonic Insulators in Two-dimensional Materials
Huaiyuan Yang, Jiaxi Zeng, Yuelin Shao +3
Quantum spin-hall insulator (QSHI) processes nontrivial topology. We notice that the electronic structures of some particular QSHIs are favorable for realization of excitonic insul…
Electron Doping of a Double Perovskite Flat-band System
Lun Jin, Nicodemos Varnava, Danrui Ni +5
Electronic structure calculations indicate that the Sr2FeSbO6 double perovskite has a flat-band set just above the Fermi level that includes contributions from ordinary sub-bands w…
Obstructed surface states as the origin of catalytic activity in inorganic heterogeneous catalysts
Guowei Li, Yuanfeng Xu, Zhida Song +8
The discovery of new catalysts that are efficient, sustainable, and low-cost is a major research endeavor for many industrial chemical processes. This requires an understanding and…
Three-Dimensional Real Space Invariants, Obstructed Atomic Insulators and A New Principle for Active Catalytic Sites
Yuanfeng Xu, Luis Elcoro, Guowei Li +7
Topologically trivial insulators come in two kinds: atomic, where the Wannier charge centers (WCCs) are localized on the atoms, and obstructed atomic, where the WCCs are located aw…
Filling-Enforced Obstructed Atomic Insulators
Yuanfeng Xu, Luis Elcoro, Zhi-Da Song +6
Topological band theory has achieved great success in the high-throughput search for topological band structures both in paramagnetic and magnetic crystal materials. However, a sig…
General Construction and Topological Classification of All Magnetic and Non-Magnetic Flat Bands
Dumitru Călugăru, Aaron Chew, Luis Elcoro +3
Exotic phases of matter emerge from the interplay between strong electron interactions and non-trivial topology. Owing to their lack of dispersion at the single-particle level, sys…
Catalogue of Flat-Band Stoichiometric Materials
Nicolas Regnault, Yuanfeng Xu, Ming-Rui Li +11
Topological electronic flatten bands near or at the Fermi level are a promising avenue towards unconventional superconductivity and correlated insulating states. However, the relat…
Realization of the field-free Josephson Diode
Heng Wu, Yaojia Wang, Yuanfeng Xu +7
The superconducting analog to the semiconducting diode, the Josephson diode, has long been sought, with multiple avenues to realization proposed by theorists. Exhibiting magnetic-f…
Evidence for a Monolayer Excitonic Insulator
Yanyu Jia, Pengjie Wang, Cheng-Li Chiu +19
The interplay between topology and correlations can generate a variety of quantum phases, many of which remain to be explored. Recent advances have identified monolayer WTe2 as a p…
Magnetic Topological Quantum Chemistry
Luis Elcoro, Benjamin J. Wieder, Zhida Song +3
For over 100 years, the group-theoretic characterization of crystalline solids has provided the foundational language for diverse problems in physics and chemistry. However, the gr…
Spin-Orbit-Induced Topological Flat Bands in Line and Split Graphs of Bipartite Lattices
Da-Shuai Ma, Yuanfeng Xu, Christie S. Chiu +4
Topological flat bands, such as the band in twisted bilayer graphene, are becoming a promising platform to study topics such as correlation physics, superconductivity, and transpor…
Colossal magnetoresistance in a nonsymmorphic antiferromagnetic insulator
P. F. S. Rosa, Yuanfeng Xu, S. K. Kushwaha +14
Here we investigate antiferromagnetic EuInSb, a nonsymmorphic Zintl phase. Our electrical transport data show that EuInSb is remarkably insulati…
High-throughput calculations of magnetic topological materials
Yuanfeng Xu, Luis Elcoro, Zhida Song +6
The discoveries of intrinsically magnetic topological materials, including semimetals with a large anomalous Hall effect and axion insulators, have directed fundamental research in…
Dirac surface states in intrinsic magnetic topological insulators EuSn2As2 and MnBi2nTe3n+1
Hang Li, Shun-Ye Gao, Shao-Feng Duan +24
In magnetic topological insulators (TIs), the interplay between magnetic order and nontrivial topology can induce fascinating topological quantum phenomena, such as the quantum ano…
Topological nodal lines and hybrid Weyl nodes in YCoC
Yuanfeng Xu, Yueqiang Gu, Tiantian Zhang +4
Based on first-principles calculations and effective model analysis, we propose that the noncentrosymmetric superconductor YCoC in normal state is a topological semimetal. In t…
Higher-order Topology of Axion Insulator EuInAs
Yuanfeng Xu, Zhida Song, Zhijun Wang +2
Based on first-principles calculations and symmetry analysis, we propose that EuInAs is a long awaited axion insulator with antiferromagnetic (AFM) long range order. Charac…
Superconductivity Induced at a Point Contact on the Topological Semimetal Tungsten Carbide
Xing-yuan Hou, Zong Wang, Ya-dong Gu +12
We report the observation of local superconductivity induced at the point contact formed between a normal metal tip and WC -- a triple point topological semimetal with super hardne…
Symmetry Enforced Chiral Hinge States and Surface Quantum Anomalous Hall Effect in Magnetic Axion Insulator
Changming Yue, Yuanfeng Xu, Zhida Song +4
A universal mechanism to generate chiral hinge states in the ferromagnetic axion insulator phase is proposed, which leads to an exotic transport phenomena, the quantum anomalous Ha…
Electronic, optical and transport properties of van der Waals Transition-metal Dichalcogenides Heterostructures: A First-principle Study
Ke Xu, Yuanfeng Xu, Hao Zhang +8
Two-dimensional (2D) transition-metal dichalcogenide (TMD) MX (M = Mo, W; X= S, Se, Te) possess unique properties and novel applications. In this work, we perform first-princip…
Large intrinsic anomalous Hall effect in half-metallic ferromagnet Co3Sn2S2 with magnetic Weyl fermions
Qi Wang, Yuanfeng Xu, Rui Lou +7
The origin of anomalous Hall effect (AHE) in magnetic materials is one of the most intriguing aspect in condensed matter physics and has been controversial for a long time. Recent…
Three-component fermions with surface Fermi arcs in topological semimetal tungsten carbide
J. -Z. Ma, J. -B. He, Y. -F. Xu +19
Topological Dirac and Weyl semimetals not only host quasiparticles analogous to the elementary fermionic particles in high-energy physics, but also have nontrivial band topology ma…
Electronic, transport and optical properties of monolayer and GeSe: A first-principles study
Yuanfeng Xu, Hao Zhang, Hezhu Shao +6
The extraordinary properties and the novel applications of black phosphorene induce the research interest on the monolayer group-IV monochalcogenides. Here using the first-principl…
The anisotropic ultrahigh hole mobility in strain-engineering two-dimensional penta-SiC
Yuanfeng Xu, Zeyu Ning, Hao Zhang +7
Using the first-principles calculations based on density functional theory, we systematically investigate the strain-engineering (tensile and compressive strain) electronic, mechan…
Weyl Ferroelectric Semimetal
Ronghan Li, Yuanfeng Xu, Jianggang He +7
The recent discoveries of ferroelectric metal and Weyl semimetal (WSM) have stimulated a natural question: whether these two exotic states of matter can coexist in a single materia…